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Date: Tue, 26 Jul 2016 17:01:55 +0300
From: Foster Snowhill <forst@...stwoof.ru>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: LKML <linux-kernel@...r.kernel.org>,
Matthias Prager <linux@...thiasprager.de>,
Jason Taylor <jason.taylor@...plivity.com>,
Marc Zyngier <marc.zyngier@....com>
Subject: Re: PROBLEM: Intel I210AT NIC resets while using PCI passthrough on
ESXi (regression)
On 26.07.16 16:49, Thomas Gleixner wrote:
> On Mon, 25 Jul 2016, Foster Snowhill wrote:
>> On 25.07.16 13:56, Thomas Gleixner wrote:
>>> Could you please give the patch below a try? It might be related, but I'm not
>>> sure whether it will cure that particular vmware oddity.
>>
>> Patch fixed the issue for me. Did 4-5 reboots just to be sure, all working properly, no adapter resets. Just for the sake of experiment built a clean 4.7 kernel without the patch, issue still present there as expected.
>>
>
> Can you please test something else with that patch?
>
> After starting the NIC, can you please shutdown the interface, so the
> interrupt gets shutdown as well. (It should vanish from /proc/interrupts).
root@...ntutest ~ # cat /proc/interrupts
CPU0
0: 22 IO-APIC 2-edge timer
1: 9 IO-APIC 1-edge i8042
4: 3641 IO-APIC 4-edge serial
8: 1 IO-APIC 8-edge rtc0
9: 0 IO-APIC 9-fasteoi acpi
12: 15 IO-APIC 12-edge i8042
14: 0 IO-APIC 14-edge ata_piix
15: 0 IO-APIC 15-edge ata_piix
16: 1 IO-APIC 16-fasteoi vmwgfx
24: 0 PCI-MSI 344064-edge PCIe PME, pciehp
25: 0 PCI-MSI 346112-edge PCIe PME, pciehp
26: 0 PCI-MSI 348160-edge PCIe PME, pciehp
27: 0 PCI-MSI 350208-edge PCIe PME, pciehp
28: 0 PCI-MSI 352256-edge PCIe PME, pciehp
29: 0 PCI-MSI 354304-edge PCIe PME, pciehp
30: 0 PCI-MSI 356352-edge PCIe PME, pciehp
31: 0 PCI-MSI 358400-edge PCIe PME, pciehp
32: 0 PCI-MSI 360448-edge PCIe PME, pciehp
33: 0 PCI-MSI 362496-edge PCIe PME, pciehp
34: 0 PCI-MSI 364544-edge PCIe PME, pciehp
35: 0 PCI-MSI 366592-edge PCIe PME, pciehp
36: 0 PCI-MSI 368640-edge PCIe PME, pciehp
37: 0 PCI-MSI 370688-edge PCIe PME, pciehp
38: 0 PCI-MSI 372736-edge PCIe PME, pciehp
39: 0 PCI-MSI 374784-edge PCIe PME, pciehp
40: 0 PCI-MSI 376832-edge PCIe PME, pciehp
41: 0 PCI-MSI 378880-edge PCIe PME, pciehp
42: 0 PCI-MSI 380928-edge PCIe PME, pciehp
43: 0 PCI-MSI 382976-edge PCIe PME, pciehp
44: 0 PCI-MSI 385024-edge PCIe PME, pciehp
45: 0 PCI-MSI 387072-edge PCIe PME, pciehp
46: 0 PCI-MSI 389120-edge PCIe PME, pciehp
47: 0 PCI-MSI 391168-edge PCIe PME, pciehp
48: 0 PCI-MSI 393216-edge PCIe PME, pciehp
49: 0 PCI-MSI 395264-edge PCIe PME, pciehp
50: 0 PCI-MSI 397312-edge PCIe PME, pciehp
51: 0 PCI-MSI 399360-edge PCIe PME, pciehp
52: 0 PCI-MSI 401408-edge PCIe PME, pciehp
53: 0 PCI-MSI 403456-edge PCIe PME, pciehp
54: 0 PCI-MSI 405504-edge PCIe PME, pciehp
55: 0 PCI-MSI 407552-edge PCIe PME, pciehp
56: 4319 PCI-MSI 1572864-edge vmw_pvscsi
57: 32 PCI-MSI 129024-edge vmw_vmci
58: 0 PCI-MSI 129025-edge vmw_vmci
59: 134 PCI-MSI 1064960-edge ahci[0000:02:01.0]
60: 1 PCI-MSI 9961472-edge ens224
61: 64 PCI-MSI 9961473-edge ens224-rx-0
62: 43 PCI-MSI 9961474-edge ens224-tx-0
NMI: 0 Non-maskable interrupts
LOC: 5384 Local timer interrupts
SPU: 0 Spurious interrupts
PMI: 0 Performance monitoring interrupts
IWI: 1 IRQ work interrupts
RTR: 0 APIC ICR read retries
RES: 0 Rescheduling interrupts
CAL: 0 Function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
THR: 0 Threshold APIC interrupts
DFR: 0 Deferred Error APIC interrupts
MCE: 0 Machine check exceptions
MCP: 1 Machine check polls
ERR: 0
MIS: 0
PIN: 0 Posted-interrupt notification event
PIW: 0 Posted-interrupt wakeup event
root@...ntutest ~ # ifdown ens224
RTNETLINK answers: No such process
RTNETLINK answers: Cannot assign requested address
root@...ntutest ~ # cat /proc/interrupts
CPU0
0: 22 IO-APIC 2-edge timer
1: 9 IO-APIC 1-edge i8042
4: 4459 IO-APIC 4-edge serial
8: 1 IO-APIC 8-edge rtc0
9: 0 IO-APIC 9-fasteoi acpi
12: 15 IO-APIC 12-edge i8042
14: 0 IO-APIC 14-edge ata_piix
15: 0 IO-APIC 15-edge ata_piix
16: 1 IO-APIC 16-fasteoi vmwgfx
24: 0 PCI-MSI 344064-edge PCIe PME, pciehp
25: 0 PCI-MSI 346112-edge PCIe PME, pciehp
26: 0 PCI-MSI 348160-edge PCIe PME, pciehp
27: 0 PCI-MSI 350208-edge PCIe PME, pciehp
28: 0 PCI-MSI 352256-edge PCIe PME, pciehp
29: 0 PCI-MSI 354304-edge PCIe PME, pciehp
30: 0 PCI-MSI 356352-edge PCIe PME, pciehp
31: 0 PCI-MSI 358400-edge PCIe PME, pciehp
32: 0 PCI-MSI 360448-edge PCIe PME, pciehp
33: 0 PCI-MSI 362496-edge PCIe PME, pciehp
34: 0 PCI-MSI 364544-edge PCIe PME, pciehp
35: 0 PCI-MSI 366592-edge PCIe PME, pciehp
36: 0 PCI-MSI 368640-edge PCIe PME, pciehp
37: 0 PCI-MSI 370688-edge PCIe PME, pciehp
38: 0 PCI-MSI 372736-edge PCIe PME, pciehp
39: 0 PCI-MSI 374784-edge PCIe PME, pciehp
40: 0 PCI-MSI 376832-edge PCIe PME, pciehp
41: 0 PCI-MSI 378880-edge PCIe PME, pciehp
42: 0 PCI-MSI 380928-edge PCIe PME, pciehp
43: 0 PCI-MSI 382976-edge PCIe PME, pciehp
44: 0 PCI-MSI 385024-edge PCIe PME, pciehp
45: 0 PCI-MSI 387072-edge PCIe PME, pciehp
46: 0 PCI-MSI 389120-edge PCIe PME, pciehp
47: 0 PCI-MSI 391168-edge PCIe PME, pciehp
48: 0 PCI-MSI 393216-edge PCIe PME, pciehp
49: 0 PCI-MSI 395264-edge PCIe PME, pciehp
50: 0 PCI-MSI 397312-edge PCIe PME, pciehp
51: 0 PCI-MSI 399360-edge PCIe PME, pciehp
52: 0 PCI-MSI 401408-edge PCIe PME, pciehp
53: 0 PCI-MSI 403456-edge PCIe PME, pciehp
54: 0 PCI-MSI 405504-edge PCIe PME, pciehp
55: 0 PCI-MSI 407552-edge PCIe PME, pciehp
56: 4338 PCI-MSI 1572864-edge vmw_pvscsi
57: 39 PCI-MSI 129024-edge vmw_vmci
58: 0 PCI-MSI 129025-edge vmw_vmci
59: 156 PCI-MSI 1064960-edge ahci[0000:02:01.0]
60: 1 PCI-MSI 9961472-edge
61: 72 PCI-MSI 9961473-edge
62: 49 PCI-MSI 9961474-edge
NMI: 0 Non-maskable interrupts
LOC: 7417 Local timer interrupts
SPU: 0 Spurious interrupts
PMI: 0 Performance monitoring interrupts
IWI: 1 IRQ work interrupts
RTR: 0 APIC ICR read retries
RES: 0 Rescheduling interrupts
CAL: 0 Function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
THR: 0 Threshold APIC interrupts
DFR: 0 Deferred Error APIC interrupts
MCE: 0 Machine check exceptions
MCP: 1 Machine check polls
ERR: 0
MIS: 0
PIN: 0 Posted-interrupt notification event
PIW: 0 Posted-interrupt wakeup event
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